instruction leaflet il012002en effective march 2013 instruction leaflet for modbus power monitoring/...

ContentsDescription Page

1. Installation and Specifications ..............................................................................................................22. Indicators ..............................................................................................................................................93. Modbus RTU Communications ......................................................................................................... 104. Configuration and Input ...................................................................................................................... 115. Modbus Registers .............................................................................................................................. 12 Appendix A ......................................................................................................................................... 17

Effective March 2013Instruction Leaflet IL012002EN

Instruction Leaflet for Modbus Power Monitoring/Metering Module (PM3) for FD, JG, and KD/LGCircuit Breakers and Motor Circuit Protectors

2

Instruction Leaflet IL012002ENEffective March 2013

Instruction Leaflet for Modbus Power Monitoring/Metering Module (PM3) for FD, JG, and KD/LG

Circuit Breakers and Motor Circuit Protectors

EATON CORPORATION www.eaton.com

1. Installation and Specifications

CAUTION DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON EQUIPMENT WHILE IT IS ENERGIZED. DEATH OR SEVERE PERSONAL INJURY CAN RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING.

Figure 1. Attaching the Endcap.

Table 1. End Cap Kits.

Breaker Frame End Cap Kit Cat # End Cap Kit Style #

FD KPEKM1 6606C63G04

FD KPEK1 67B9101G03

JG FJ3RTWK 68C2837G09

JG FJ3RTDK 68C2837G07

KD KPEKM3 5102A14G02

KD KPEK3 5102A14G01

LG L3RTWK 66A4562G05

1. Attach endcap.

Figure 2. Inserting the Unit into the Breaker.

Figure 3. Locking the Unit in Place.

2. Insert unit into breaker.

Breaker must be in OFF or TRIPPED position for assembly.

3. Push down.

3


Instruction Leaflet for Modbus Power Monitoring/Metering Module (PM3) for FD, JG, and KD/LG Circuit Breakers and Motor Circuit Protectors


Figure 4. Inserting the Screws into the Retainers.

Figure 5. Torquing the Mounting Screws.

4. Insert screws in retainers.

Torque Chart for Connecting PM3 to Breaker

Breaker Frame Head Size Torque

FD Slotted screw 34-38 in-lb 4-4.4 N•m

JG Hex .236" 120-144 in-lb 14-16 N•m

KD Hex .236" 120-144 in-lb 14-16 N•m

LG Hex .315" 275 in-lb 31 N•m

5. Tighten mounting screws to provided torque specifications.

4





Table 2. FD, JG, KD, LG Terminal Information.

Frame Type Wire Type

Wire SizeTerminal Materials Catalog Number

Torque

AWG mm2 Lb.In. Nm

LG-Frame Cu/Al 500-750(1) 240-380(1) Aluminum TA631L*2 550 62

LG-Frame Cu/Al 2-500(2) 35-240(2) Aluminum TA632L*1*2 375 42

LG-Frame Cu/Al 2-500(1) 35-240(1) Aluminum TA350L 375 42

KD-Frame*3 Cu/Al 2-500(2) 35-240(2) Aluminum TA632L*1*2 375 42

KD-Frame*3 Cu/Al 2-500(1) 35-240(1) Aluminum TA350L 375 42

JG-Frame Cu/Al #4-350(1) 25-185 Aluminum TA250FJ 250 28.2

FD-Frame Cu/Al 4-40 25-95 Aluminum 3TA225FD 120 13.5*1 Standard collars mounted on line and load end.*2 Terminal Shield required.*3 When using PM3 on KD breakers, LG terminals are required on load end of PM3.

CAUTION TERMINAL SHIELDS MUST BE USED AS PER ORIGINAL CIRCUIT BREAKER INSTALLATION INSTRUCTIONS.

Figure 6. Layout of LG 3 Pole with PM3.

qq

12.135308.23

2.74069.605.480

139.19

8.438214.33

13.823351.10

10.125257.18

5.577141.664.733

120.22

1.71943.66 .860

21.84

3.984101.194.062103.17

5.430137.92

3.984101.19

4.062103.17

4.307109.40

13.823351.10

5.577141.66

2.74069.60

5.480139.19

8.438214.33

12.135308.23

4.733120.22

1.71943.66

.86021.84

5




Figure 7. Layout of KD 3 Pole with PM3.

Figure 8. Layout of JG with PM3.

4X .125-20 UNC

8.438214.33

12.137308.28

10.125257.18

13.825351.16

4.922125.02

.86021.84

1.71943.66

5.766146.46

3.81396.85

4.062103.17

4.313109.55

3.984101.19

4.89124.21

5.490139.45

2.74569.72 4.062

103.17

2.74569.72

5.490139.45

5.766146.46

13.823351.10

4.922125.02

.86021.84

1.71943.66

8.438214.33

12.137308.28

LOAD END

LINE END

q HANDLE

LINE END

LOAD END

q HANDLE

2X M5 x 0.8

CL

3.952100.38

11.983304.37

1.37534.93

17.48.688

.78119.84

3.17180.54

5.500139.70

10.500266.70

2.06352.404.125

104.78

CL CL HANDLE

3.56890.633.43887.333.34287.17

3.952100.38

3.34484.943.42286.92

4.409111.99

1.37534.93

17.48.688

304.8012.000

10.500266.70

5.500139.70 177.8

7.000

100.343.952

3.17180.52

6





Figure 9. Layout of FD with PM3.

CL CL CL

1.37534.93

17.45.687

2.87573.03

4.500114.30

9.531242.09

3.62592.08

6.000152.40

11.000279.40

3.50188.933.38585.98

3.18880.98

3.62592.08

3.62592.08

11.000279.40

3.34484.94

3.42286.92

3.945100.20

4.125104.78

1.37534.93

.68717.45

.75019.05

2.87573.03

4.500114.30

9.531242.09

2.06352.40

7




Table 3. PM3 Power Monitoring and Communications Module Specifications.

Current Input

Pick up current 0.3A rms

Max reported current

FD / JG 250A rms

KD / LD 630A rms

Accuracy 0.5% of reading

Voltage Inputs

Range

Line-to-neutral 30 - 366 Vac

Line-to-line 52 - 635 Vac

Supported Systems 3 element wye, 3 element wye + neutral 2 element delta, 4-wire delta systems

Input Impedance 996 kilo ohm/phase

Burden per phase 0.36 VA/phase max. at 600 V; 0.014 VA at 120 Volts"

Phase Voltage Connections Internal via screw terminal to busbar

Neutral Connection For wye system, a Neutral is required to be connected to the PM3 on the right Phoenix connector.

If Neutral is not available, the meter will calculate a virtual Neutral based on the phase to phase RMS voltage. The system voltage must be balanced for this to be accurate.

Frequency

Frequency 50 / 60 Hz

Accuracy ± 0.1 Hz

Resolution 0.1 Hz

Power and Energy

Accuracy 1% of reading (ANSI C12.1)

Isolation

All inputs and outputs are galvanically isolated to 2500 volts.

Environmental Ratings

Operating temperature -20º to +50°C (-4 to 122°F)

Storage temperature -20º to +50°C (-4 to 122°F)

Operating humidity To 95% RH non-condensing

Sensing Method

Voltage, current True RMS

Sampling Rate 13.02 K samples per second

Update Rate

Watts, Var and VA 1.03 sec at 60 Hz

All other parameters 1.07 second at 60 Hz

Power Supply

DC voltage 18 – 30 Vdc

Max Current 30.0 mA @ 24 Vdc

Burden 0.72 Watts

Standard Communication Format

Connection type 3 Wire RS-485 (A,B,Common)

Com port baud rate 9600 or 19,200 bauds Default: 19,200

Modbus address range 01 – 247

Data format Selectable (8,N,1 | 8,N,2 | 8,Even,1 | 8,Odd, 1)

Default: 8,N,2

Protocols Modbus RTU

Internal Termination Resistor selectable On or Off

Via DIP switch Default: Enabled

Dimensions and Shipping

Weight (lbs) FD 1.26 (0.57 kg)

JG 1.6 (0.73 kg)

KD / LG 2.25 (1.02 kg)

Basic unit (in) FD 4.13 W X 5.00 L X 3.39 H (104.90 x 127.00 x 86.11 mm)

JG 4.13 W X 5.00 L X 3.39 H (104.90 x 127.00 x 86.11 mm)

KD / LG 5.48 W X 3.70 L X 4.062 H (139.19 x 93.98 x 103.17 mm)

Shipping container dimensions (in)

FD/JG 8.0 X 5.13 x 5.5 (203.20 x 130.30 x 139.70 mm)

KD/LG 6.25 X 8.25 X 7.00 (158.75 x 209.55 x 177.80 mm)

Compliance

UL489, Annex J

IEC 61000-4-2 - ESD

IEC 61000-4-4 - EFT

IEC 61000-4-5 - SURGE

IEC 61000-4-6 - EMC

ANSI C12.1 (1% accuracy)

UL®/cUL®/CE

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Figure 10. PM3 Breaker Status Wiring Diagram (KD/LG PM3).

Breaker Status:

Breaker status is brought to the unit through a 5-pin Phoenix RA-series connector, part number 1844249. Figure 10 shows the pin assignments for this connector.

CAUTION FOR WYE SYSTEM, A NEUTRAL IS REQUIRED TO BE CONNECTED TO THE PM3 ON THE RIGHT PHOENIX CONNECTOR. IF NEUTRAL IS NOT AVAIL-ABLE, THE METER WILL CALCULATE A VIRTUAL NEUTRAL BASED ON THE PHASE-TO-PHASE RMS VOLTAGE. THE SYSTEM MUST BE BALANCED FOR THIS TO BE ACCURATE.

CombinationAuxiliary/alarmSwitch Kit

RedBell

Alarm

Black

BlueAux

Alarm

Black

RedBell

AlarmNo Connect

VNeutral

EarthGround

+24VDC DC Common

Com B A

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2. Indicators

Figure 11. Status Indicators (KD/LG PM3).

2.1. Status Indicator

A single green LED is used to indicate the status of the Measurement Board. The indicator has three states:

1. OFF

No light emission indicates internal DC power is not available, or the Measurement Board has malfunctioned.

2. ON

Continuous light emission indicates power is applied, but the Measurement Board is executing a power-on self test.

3. Slow Flash

Repetitive one second on, one second off indicates the Measurement Board is operating normally.

Fast Flash

0.5 second on, 0.5 second off indicates one of three failures:

• Unit not calibrated;

• Unit has not been assembled properly; or

• Unit memory has been damaged.

Status

RX Led

TX Led

ABCom

DC Common+24VDC

EarthGround

Settings Network Address

V Neutral

Red Bell Alarm

Common

Blue Aux Alarm

No Connect

2.2. Modbus Status Indicator

Modbus Rx Indicator

When illuminated, this green LED indicates the Communications Board is receiving messages on the Modbus network.

ote:N This LED will typically be a solid green. That is, it will not flash as the transmit LED does.

Modbus Tx Indicator

When illuminated, this green LED indicates the Communications Board is transmitting a message on the Modbus network.

ote:N This LED typically flashes as the Communications Board transmits messages over the Modbus network.

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3. Modbus RTU CommunicationsModbus is a popular application-layer messaging protocol. The protocol takes place at the data link layer of the Open Systems Interconnection (OSI) model. Modbus serial line (Modbus RTU) is a Master-Slave protocol. A Modbus transaction consists of two mes-sages: a request from the master, and a reply from the slave.

The Modbus Add-on Module is a Modbus slave. The Modbus physi-cal layer transmitter and receiver conforms to the RS485 standard.

A Modbus serial line message frame, or Protocol Data Unit, con-tains:• An Address Field;• A Function Code;• Data; and• CRC.

Valid addresses are 1 – 247 decimal.

The function code indicates what kind of action to perform. Examples are:• 01 – Read Coils;• 04 – Read Input Registers;• 06 – Write Single Register;

Messages consist of 11-bit characters. Characters consist of:• 1 Start Bit;• 8 Data Bits (least significant bit first);• 1 Parity Bit (even parity is the default; other modes may be sup-

ported); or• 1 Stop Bit (2 stop bits if no parity is used).

The least significant bit is transmitted first (see Table 4).• Modbus Slave, line terminator selectable by dip switch • Baud rate (9600, 19.2k) selectable by dip switch• Parity (even, odd, none) selectable by dip switches

3.1. Modbus RS485 Network

The following simplified rules apply to a given system consisting of a cable link between master and slave devices. For more complex configurations please refer to standard Modbus RTU wiring specifi-cation rules for the RS485 network

The recommended Modbus cable has twisted-pair wires (24 AWG stranded 7x32 conductors with PVC insulation) having an aluminum/mylar foil shield with drain wire.• The maximum system capacity is 4,000 feet of communications

cable and 247 devices on the Modbus RTU network.• Make sure that there is twisted-pair wire that is recommended for

Modbus RTU network use. Use shielded twisted-pair wire to con-nect each slave to the Modbus RTU network, daisy-chain style. The polarity of the twisted pair is critically important.

3.2. Modbus Address Switches

Two rotary hexadecimal switches are used to set the Modbus Slave Address for the unit. Valid addresses are from 0x01 to 0xF7 (1 to 247).

3.3. Exception Codes

Under certain circumstances, the PM3 will return an exception code.

If the function in the query is not supported by the PM3, exception code 01 is returned in the response.

If the data (object) register is illegal, exception code 02 is returned in the response.

If the data value in the query is illegal, exception code 03 is returned.

In certain circumstances, an exception code 05 (ACK) is returned.

If the PM3 cannot perform the requested function, exception code 07 (NAK) is returned.

If only a partial register is used in the query, exception code 84 is

returned.

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4. Configuration and Input4.1. User Options Dip Switch

A six-position Dip Switch is used to set user options for the unit, as follows:

Figure 12. Six-Position Dip Switch.

Table 4. Modbus, Baud Rate and Parity Settings.

1ON Positive Power & Energy For Backfed Operation

OFF Positive Power & Energy, Normal Operation

2ON ABC (Left to Right Facing Unit)

OFF CBA (Left to Right Facing Unit)

3-4

SW3 ON & SW4 ON No Parity, 2 Stop Bits

SW3 OFF & SW4 ON No Parity, 1 Stop Bit

SW3 ON & SW4 OFF Odd Parity, 1 Stop Bit

SW3 OFF & SW4 OFF Even Parity, 1 Stop Bit

5ON 19.2 K BAUD

OFF 9600 BAUD

6ON 120 Ohm Termination Resistor installed

OFF No termination Resistor

4.2. Breaker Status

The Breaker Status is decoded from two switch inputs, Bell Alarm NC1 and Aux Alarm NC, from the Breaker

Table 5. Bell Alarm and Aux Alarm Positions.

Bell Alarm (Red) Aux Alarm (Blue) Breaker Status

OFF OFF Unknown

OFF ON Tripped

ON OFF ON

ON OFF OFF Breaker not connected or improperly wired.

1 NC= Normally Closed

1 2 43 5 6

* ON = Closed

ON *

OFF**

**OFF = Open

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5.Modbus RegistersSlave Actions, Supervisory, and Configuration Commands are accomplished through Function Code 16, Write Multiple Registers. The Modbus Add-on Module supports three such commands, as described in the following sections.

5.1. Add-on Module Status

Status is transmitted in two registers, as shown in Table 6.

Both registers must be accessed in one operation, using Function Code 04.

Table 6. Status Command Description.

NameStarting Register Number (decimal)

Starting Register Address (hex)

Number of Registers Format

Status 6145 1800 2 Encoded

Status is encoded as follows: • Primary Status – High byte of Register Address 0x1800;• Secondary Status – Low byte of Register Address 0x1800; and• Cause of Status – Register Address 0x1801.

Status encoding is shown in Tables 7 thru 9.

Table 7. Primary Status Codes Table.

Status Code Short Description

4 ALARM

9 OPERATIONAL

Table 8. Secondary Status Codes Table.


1 NOT APPLICABLE

Table 9. Cause of Status Codes Table.


1 Normal

40 DIAGNOSTIC FAILURE #1 (see Note 1 below)

43 DIAGNOSTIC WARNING #2 (see Note 2 below)

44 DIAGNOSTIC WARNING #3 (see Note 3 below)

54 DIAGNOSTIC FAILURE #4 (see Note 4 below)

113 Not Calibrated

Note 1: Measurement Board Communications FailureNote 2: FRAM Energy Buffer Error Note 3: FRAM Calibration Constants ErrorNote 4: FRAM Communication Error

5.2. Breaker Status

Breaker Status is transmitted in two discrete (bit) inputs, at address-es 100110 and 100210. Both bits may be read in one operation, or either bit may be read individually, using Function Code 02. The Function Code 02 format is shown below for a Slave Address of 0x74.

Table 10. Request From Master.

Field Name

Slave Address 0x74

Function Code 0x02

Starting Address High Byte 0x03

Starting Address Low Byte 0xE8

Number of Inputs High Byte 0x00

Number of Inputs Low Byte 0x02

CRC Low Byte

CRC High Byte

Table 11. Response From Slave.

Field Name

Slave Address 0x74

Function Code 0x02

Byte Count 0x01

Data 0x0y (data is in bits 1..0)

CRC Low Byte

CRC High Byte

The Breaker Status command is summarized in Table 12. Breaker Status encoding is shown in Table 13

Table 12. Breaker Status Command Description.

NameStarting Register Number (decimal)

Starting Register Address (hex)

Valid Number of Bits Format

Breaker Status 1001 3E8 1 or 2 Encoded

Breaker Status 1002 3E9 1 Encoded

Table 13. Breaker Status Encoding.

Register Number (decimal) Register Address (hex) Encoding

1001 3E8 0 = Open 1 = Closed

1002 3E9 0 = Not Tripped 1 = Tripped

Table 13a. Combined Breaker Status Encoding

(Registers 1001 and 1002).

Status Code Encoding

00 Open

01 Tripped

10 Closed

11 Unknown *

* Breaker not connected or improperly wired.

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If the Breaker Status cannot be determined (for example, the con-nector is not connected), an exception (0x82) code of 0x01 is returned. The response will look like (see Table 14).

Table 14. Breaker Status Unknown.

Response From Slave

Field Name

Slave Address 0x74

Function Code 0x82

Exception Error 0x01

CRC Low Byte 0x81

CRC High Byte 0x60

5.3. Metered Values

The PM3 Modbus Add-on Module communicates metered values via input registers (Function Code 04). Registers are referenced by register numbers and register addresses. Register numbers range from 1 to 65536. Register addresses range from 0 to 65535. Thus, a data value referenced with number N has an address of (N – 1). Each register contains two bytes.

The data field in the request from the Modbus Master contains the starting register address and the number of registers to read. A typical Request/Response transaction for reading metered values is shown in Table 15. This example shows a read of register numbers 6147 thru 6152 (IA thru IC) from a slave at address 116.


Field Name

Slave Address 0x74

Function Code 0x04


Starting Address Low Byte 0x02

Number of Registers High Byte 0x00

Number of Registers Low Byte 0x06

CRC Low Byte

CRC High Byte


Field Name

Slave Address 0x74

Function Code 0x04

Byte Count 0x0C

Data From Register 0x1802 High Byte

Data From Register 0x1802 Low Byte











CRC Low Byte

CRC High Byte

5.4. Standard Metered Values

Standard metered values are transmitted as 32-bit numbers. Metered values are read-only and are transmitted in two registers. Both registers must be accessed in one operation, using Function Code 04.

ote:N The arrangement of the bytes in the 4-byte standard meter register values may be configured by writing to configuration register number 2003 (register address 0x07D2).

Table 17 summarizes the Modbus commands for the standard metered values.

Table 17. Standard Metered Values Command Descriptions.

Name Units

Register Number (decimal)

Register Address (hex)

Scale factor Format

IA A 6147 1802 10 Uint32

IB A 6149 1804 10 Uint32

IC A 6151 1806 10 Uint32

VAB V 6159 180E 10 Uint32

VBC V 6161 1810 10 Uint32

VCA V 6163 1812 10 Uint32

VAN V 6167 1816 10 Uint32

VBN V 6169 1818 10 Uint32

VCN V 6171 181A 10 Uint32

Real Power – 3 Phase W 6187 182A 1 Int32

Reactive Power – 3 phase

VAR 6189 182C 1 Uint32

Apparent Power – 3 phase

VA 6191 182E 1 Uint32

Apparent Power Factor % 6195 1832 100 Int32

Frequency Hz 6197 1834 10 Uint32

Phase A Real Power W 6203 183A 1 Int32

Phase B Real Power W 6205 183C 1 Int32

Phase C Real Power W 6207 183E 1 Int32

Phase A Reactive Power VAR 6209 1840 1 Int32

Phase B Reactive Power VAR 6211 1842 1 Int32

Phase C Reactive Power VAR 6213 1844 1 Int32

Phase A Apparent Power

VA 6215 1846 1 Int32

Phase B Apparent Power

VA 6217 1848 1 Uint32

Phase C Apparent Power

VA 6219 184A 1 Uint32

Phase A Apparent Power Factor

% 6227 1852 100 Uint32

Phase B Apparent Power Factor

% 6229 1854 100 Uint32

Phase C Apparent Power Factor

% 6231 1856 100 Uint32

5.5. Energy Values

Energy values are 32-bit numbers. Each energy value requires four Modbus registers. When reading an energy value, all four registers must be read in one operation.

ote:N The arrangement of the bytes in the 4-byte energy register values may be configured by writing to configuration register number 2003 (register address 0x07D2).

Table 18 summarizes the Modbus commands for the energy values.

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Table 18. Energy Values Command Descriptions.

Name Units

Register Number (decimal)

Register Address (hex) Format

Forward Energy kWh 6259 1872 Uint32

Reverse Energy kWh 6261 1874 Uint32

Total Energy kWh 6263 1876 Int32

Leading Reactive Energy kVARh 6265 1878 Uint32

Lagging Reactive Energy kVARh 6267 188A Uint32

Net Reactive Energy kVARh 6269 187C Int32

Apparent Energy kVAh 6271 187E Uint32

Saved Forward Energy kWh 6503 1966 Uint32

Saved Reverse Energy kWh 6505 1968 Uint32

Saved Total Energy kWh 6507 196A Int32

Saved Leading Reactive Energy kVARh 6509 196C Uint32

Saved Lagging Reactive Energy kVARh 6511 196E Uint32

Saved Net Reactive Energy kVARh 6513 1970 Int32

Saved Apparent Energy kVAh 6515 1972 Uint32

5.5.1 Product ID and Breaker Product ID

The Product ID and Breaker Product ID are transmitted in two reg-isters, as shown in Table. Both registers must be accessed in one operation, using Function Code 04.

Table 19. Product ID Command Descriptions.

NameRegister Number (decimal)

Register Address (hex) Format

Product ID/Breaker Product ID 6255 186E Encoded

The Product ID is encoded as follows:• Product ID = 3 – b15 .. b10 of Register Address 0x186F;• Communication Version = 1 – b9 .. b6 of Register Address

0x186F; and• Division Code = 35 – b5 b0 of Register Address 0x186F.

The Breaker Product ID is encoded as follows:• Product ID = 1 – b15 .. b10 of Register Address 0x186E;• Communication Version = 1 – b9 .. b6 of Register Address

0x186E; and• Division Code = 32 – b5 b0 of Register Address 0x186E.

5.6. Snapshot Energy

The PM3 Modbus Module supports a control command to cap-ture energy. A write to Register Numbers 2911 (Address 0x0B5E) and 2912 (Address 0x0B5F) using Function Code 16 (0x10), Write Multiple Registers, is used for this purpose. The Modbus command registers and assignments are shown in Tables 20 and 21.

ote:N The effect of this command is the same as the Snapshot Energy com-mand (see Section 5.7).


Field Name

Slave Address 0x74

Function Code 0x10

Starting Address High Byte 0x0B

Starting Address Low Byte 0x5E



Byte Count 0x04

Register 0x0B5E Data Value High Byte 0x0D

Register Address 0x0B5E Data Value Low Byte 0x00

Register Address 0x0B5F Data Value High Byte 0x00

Register Address 0x0B5F Data Value Low Byte 0x00

CRC Low Byte

CRC High Byte


Field Name

Slave Address 0x74

Function Code 0x10


Starting Address Low Byte 0x5E



CRC Low Byte

CRC High Byte

15




5.7. Snapshot Energy

The PM3 Modbus Module supports a control command to capture energy. A write to Register Numbers 2901 - 2903 (Address 0x0B54 through 0x0B56) using Function Code 16 (0x10), Write Multiple Registers, is used for this purpose. This command consists of a three-byte instruction, followed by the one’s complement of the instruction (also three bytes). The capture energy instruction is 0x000080. The Modbus command registers and assignments are shown in Tables 22 and 23.


Field Name

Slave Address 0x74

Function Code 0x10





Byte Count 0x06

Register Address 0x0B54 Data Value High Byte 0x00

Register Address 0x0B54 Data Value Low Byte 0x80

Register Address 0x0B55 Data Value High Byte 0x7F

Register Address 0x0B55 Data Value Low Byte 0x00

Register Address 0x0B56 Data Value High Byte 0xFF

Register Address 0x0B56 Data Value Low Byte OxFF

CRC Low Byte

CRC High Byte


Field Name

Slave Address 0x74

Function Code 0x10





CRC Low Byte

CRC High Byte

5.8. Write Fixed-Point Data Multi-Register Configuration

Each Modbus register is defined in the Modbus protocol as a two-byte entry. Data fields requiring more than two bytes (such as 32-bit integers) must occupy consecutive register locations. Modbus pro-tocol defines register information to be transmitted with the most-significant byte first, followed by the least-significant byte. However, the protocol does not specify the order of multi-register information.

The default adopted by most of the industry places the least-signifi-cant word in the first Modbus register (x) followed by the next higher order 16-bit word in the next Modbus register (x+1), and so forth. For example, a 32-bit data value 0x98765432 would be transmitted as shown in Table 24 (left to right).

Table 24. Default Multi-Register Fixed-Point Data Transmission Order.

Bits15...8

Bits7...0

Bits31...24

Bits23...16

Byte 1 Byte 0 (LS Byte) Byte 3 (MS Byte) Byte 2

0x54 0x32 0x98 0x76

Register x Register x + 1

To accommodate systems not incorporating this defacto standard, the Module may be configured to reverse this multi-register order for registers. This is accomplished by setting Register Number 2003 (Address 0x07D2) to a non-zero number. This places the most-significant word in the First Modbus register (x) followed by the next lower order 16-bit word in the next Modbus register (x+1), and so forth. For example, a 32-bit data value 0x98765432 would be trans-mitted as shown in Table 25 (left to right).

Table 25. Non-Default Multi-Register Fixed-Point Data Transmission Order.

Bits31...24

Bits23...16

Bits15...8

Bits7...0

Byte 3 (MS Byte) Byte 2 Byte 1 Byte 0 (LS Byte)

0x98 0x76 0x54 0x32

Register x Register x + 1

5.8.1 Master Configuration Message:


Field Name

Slave Address 0x74

Function Code 0x10


Starting Address Low Byte 0xD2



Byte Count 0x02

Data Value High Byte 0x00 for Default (Table 43)0xFF for Non-Default (Table 54)

Data Value Low Byte 0x00 for Default (Table 4)0xFF for Non-Default (Table 5)

CRC Low Byte

CRC High Byte

16





5.9. Modbus Diagnostics Registers

Modbus Function Code 08 provides a series of tests for checking the communications system or for checking various internal error condi-tions. The function uses a two-byte sub-function field to define the type of test to be performed. The format is shown in Tables 27 and 28.


Field Name

Slave Address 0x74

Function Code 0x08

Sub-Function Code 0x1C

Data High Byte 0x20

Data Low Byte 0x12

CRC Low Byte

CRC High Byte

Table 28. Request From Slave.

Field Name

Slave Address 0x74

Function Code 0x08

Sub-Function Code 0x1C

Data High Byte 0x20

Data Low Byte 0x12

CRC Low Byte

CRC High Byte

The PM3 Modbus Add-on Module supports the sub-functions listed in Table 29.

Table 29. Module Supported Sub-functions.

Sub-function Code Description

Example Transmitted Data Example Received Data

0x0A Clear Diagnostic Counters, echo data word

0x55AA 0x55AA

0x0B Read Message Count Diagnostic Counter

0x0000 Message Count

0x0C Read Communications Error Count Diagnostic Counter

0x0000 Communications Error Count

0x0D Read Exception Error Count Diagnostic Counter

0x0000 Exception Error Count

0x0E Read Slave Message Count Diagnostic Counter

0x0000 Slave Message Count

0x0F Read No Response Count Diagnostic Counter

0x0000 No Response Count

0x10 Read NAK Count Diagnostic Counter

0x0000 NAK Count

0x11 Read Slave Busy Count Diagnostic Counter

0x0000 Slave Busy Count

0x12 Read Overrun Count Diagnostic Counter

0x0000 Overrun Count

0x14 Clear Diagnostic Counters, echo data word

0x55AA 0x55AA

0x1A Read Firmware version and revision

0x0000 Data High Byte – Firmware version Data Low Byte – Firmware revision

0x1B Read Firmware month and day

0x0000 Data High Byte – Firmware month Data Low Byte – Firmware day

0x1C Read Firmware year 0x0000 Firmware year

17




Appendix A

Name Numeric Units Register Number (decimal)

Register Address (decimal)

Register Address (hex)

Scale Factor

Format Function Code

Current IA A 6147-6148 6146-6147 x1802-x1803 10 Uint32 4

IB A 6149-6150 6148-6149 x1804-x1805 10 Uint32 4

IC A 6151-6151 6150-6151 x1806-x1807 10 Uint32 4

L-L Voltage VAB V 6159-6160 6158-6159 x180E-x180F 10 Uint32 4

VBC V 6161-6162 6160-6161 x1810-x1811 10 Uint32 4

VCA V 6163-6164 6162-6163 x1812-x1813 10 Uint32 4

L-N Voltage VAN V 6167-6168 6166-6167 x1816-x1817 10 Uint32 4

VBN V 6169-6170 6168-6169 x1818-x1819 10 Uint32 4

VCN V 6171-6172 6170-6171 181A-x1818 10 Uint32 4

Frequency Freq HZ 6197-6198 6169-6197 x1834-x1835 10 Uint32 4

Real Power 3 Phase W 6187-6188 6186-6187 x182A-x182B 1 Int32 4

Phase A W 6203-6204 6202-6203 x183A-x183B 1 Int32 4

Phase B W 6205-6206 6204-6205 x183C-x183D 1 Int32 4

Phase C W 6207-6208 6206-6207 x183E-x183F 1 Int32 4

Reactive Power 3 Phase VAR 6189-6190 6188-6189 x182C-x182D 1 Int32 4

Phase A VAR 6209-6210 6208-6209 x1840-x1841 1 Int32 4

Phase B VAR 6211-6212 6210-6211 x1842-x1843 1 Int32 4

Phase C VAR 6213-6214 6212-6213 x1844-x1845 1 Int32 4

Apparent Power 3 Phase VA 6191-6192 6190-6191 x182E-x182F 1 Uint32 4

Phase A VA 6215-6216 6214-6215 x1846-x1847 1 Uint32 4

Phase B VA 6217-6218 6216-6217 x1848-x1849 1 Uint32 4

Phase C VA 6219-6220 6218-6219 x184A-x184B 1 Uint32 4

Power Factor % 6195-6196 6194-6195 x1832-x1833 100 Uint32 4

Phase A Power Factor % 6227-6228 6226-6227 x1852-x1853 100 Uint32 4

Phase B Power Factor % 6229-6230 6228-6229 x1854-x1855 100 Uint32 4

Phase C Power Factor % 6231-6232 6230-6231 x1856-x1857 100 Uint32 4

Energy Forward kWh 6259-6260 6258-6259 x1872-x1873 1 Uint32 4

Reverse kWh 6261-6262 6260-6261 x1874-x1875 1 Uint32 4

Total kWh 6263-6264 6262-6263 x1876-x1877 1 Int32 4

Apparent kVAh 6271-6272 6270-6271 x187E-x187F 1 Uint32 4

Saved Forward kWh 6503-6504 6502-6503 x1966-x1967 1 Uint32 4

Saved Reverse Wh 6505-6506 6504-6505 x1968-x1969 1 Uint32 4

Saved Total kWh 6507-6508 6506-6507 x196A-x196B 1 Int32 4

Saved Apparent kVAh 6515-6516 6514-6515 x1972-x1973 1 Uint32 4

Reactive Energy Leading kVARh 6265-6266 6264-6265 x1878-x1879 1 Uint32 4

Lagging kVARh 6267-6268 6266-6267 x187A-x187B 1 Uint32 4

Net kVARh 6269-6270 6268-6269 x187C-x187D 1 Int32 4

Saved Leading kVARh 6509-6510 6508-6509 x196C-x196D 1 Uint32 4

Saved Lagging kVARh 6511-6512 6510-6511 x196E-x196F 1 Uint32 4

Saved Net kVARh 6513-6514 6512-6513 x1970-x1971 1 Int32 4

Status Module N/A 6145-6146 6144-6145 x1800-x1801 N/A Encoded 2

Breaker N/A 1001-1002 1000-1001 x03E8-x03E9 N/A Encoded 4

ID Product/Breaker Product N/A 6255-6256 6254-6255 x186E-x186F N/A Encoded 4

18





Notes:

19




Notes:

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© 2013 Eaton CorporationAll Rights ReservedPrinted in USAPublication No. IL012002EN / TBG001071March 2013

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The instructions for installation, testing, maintenance, or repair herein are provided for the use of the product in general commercial applications and may not be appropriate for use in nuclear applica-tions. Additional instructions may be available upon specific request to replace, amend, or supplement these instructions to qualify them for use with the product in safety-related applications in a nuclear facility.

The information, recommendations, descriptions, and safety nota-tions in this document are based on Eaton’s experience and judg-ment with respect to Retrofitting of Power Breakers. This instruction-al literature is published solely for information purposes and should not be considered all-inclusive. If further information is required, you should consult an authorized Eaton sales representative.

The sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between the parties. This literature is not intended to and does not enlarge or add to any such contract. The sole source governing the rights and remedies of any purchaser of this equipment is the contract between the purchaser and Eaton.

NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OR WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE, ARE MADE REGARDING THE INFORMATION, RECOMMENDATIONS, AND DESCRIPTIONS CONTAINED HEREIN. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or conse-quential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its cus-tomers resulting from the use of the information, recommendations and description contained herein.

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